Improvement in stoves



'D. L. STILES.

Heating Stove. A No. 40,663. Patented Nov. 17, 1863.

NITED STATES PATENT OFFICE.

DAVID L. STILES, or RooHEsTEaNEw YORK, Assieiioatro iu. Humme- TON, AGENT, or SAME rLAcE.

IMPROVEMENT IN STOVEfS.

Specification forming part of Letters Patent, No. 40,663 dated November 17, 1863.

To all whom it may concern! Be it known that 1, DAVID L. STILEs, of Rochester, in the county of Monroe and State of New York, have invented a new and useful Improvement in Stoves; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making a part of this specification.

Figure 1 is a central vertical section of my improved stove; Fig. 2, a transverse horizontal section of the same; Figs. 3 and 4, afront view and vertical section of the register.

Like letters of reference indicate corresponding parts in all the figures.

My improved stove is intended more particularly for burning wood, and is of that class in which a downward flue is employed.

The invention'consists in the particular construction and arrangement of parts, whereby the whole bottom of the stove is .open to the passage of smoke and heated air, and an oval or oblong firechainber is produced, guarded on the longitudinal sides, where the heat is greatest, by theflue-plates in such a manner as to effectually prevent burning out 5? and, furthermore, in the arrangement of the register.

The top and bottom A A of the stoveare preferably made of cast-iron, not differing es sentially in general construction from the corresponding parts of ordinary cylinder-stoves. The top is provided with a cover of such size as to allow large sticks of wood to enter, and I prefer to pivot it on one side in such a manner that it maybe either turned laterally or detached entirely from place.

The two parts A A are connected by an ordinary sheet-iron cylinder, B, of suitable size, provided on one side with a door, a, for the entrance of fuel.

The bottom casting, A, of the stove is provided on two opposite sides next the cylinder with crescen t'shaped openings or passages b b of suitable size and extent, beingrepresented in the drawings as each occupying somewhat less than one-third the circumference. A greater or less size of these openings may be employed at pleasure.

0n the inner boundaries of the openings 1) b,

respectively, rest upright flue-plates (l O, of similar outline and usually made of cast-iron.

The plate 0 on one side does not extend quite to the top of the cylinder,but has a' deflection or turn a, which abuts with the cylinder; and at this point are made holes or openings d d, Fig. 1, for thepassage of the products ofcombustion into the flue-c. The plate C on the opposite side extends from bottom to-top and entirely cuts off its'flue e from the fire-chamber 1), except that a smokc-exit passage, f, is made near the upper end, which, however, is covered by a valve or damper, g, operated from the outside of the stove. On one side or the other, or both, if desired, and at a suitable height from the bottom, is made a small pipe or induction, h,for the admission of air to support the combustion, and this may be covered by a registerof any desirable kind. The

induction-pipe is preferably cast entire with the flue-plate and'fitted by cutting a hole to receive it in the outer cylinder.

The openings or passages b, b of the fines communicate with alspace or chamber, 1', beneath, which extends under the whole bottom of the stove, and may be formed in any desirable manner. I prefer, however, to use a circulardish-shaped casting, on which the bottom A rests, as represented in the drawings. The flue e opens into the smoke-pipe 7c in the usual manner.

In kindling a fire the valve or damper g is opened, as indicated in dotted lines, Fig. 1, allowing a direct passage to the smoke-pipe; but when the fire is well burning, the valveis closed, as in black lines, thus causing the smoke and heated air to pass through the holes d d and flue e downward into the space i, in which it circulates under thewhole bottom of the stove, and thence upward in the flue 6, when it finally escapes at the smoke-pipe.

Among the advantages of this arrangement are the following:

First. An oval or oblong fire-chamber, D, is produced, bounded on its longitudinal sides by the flue-plates O C, which, from their extent, receive most of the heat, and therefore prevent burning out. As the supply-air is received midway-and necessarily, from the shape of the fire-chamber-the greatest combustion is at the center, so that the outer cylinder is protected where most exposed. Thus the flue-plates not only inclose the flue, but

also serve the double purpose of a shield or lining to protect the sheet-iron, which is not the ease in ordinary downward-flue stoves.

Second. By this arrangement I am enabled to produce an oblong fire-chamber and still employ a plane cylinder, B, outside, made of sheet-iron, thus not only preserving symmetry of form, but also economizing cost.

Third. .The flue-plates G O, by being concave and therefore of so great extent of surface, receive a greater amount of heat than they would it arranged in" any other way. Therefore the thin sheet of air that passes through the flue is more highly heated than usual. It is also more equally distributed, as the fines occupy the Inajorportion of the cylinders surface, and the consequence is that the radiation is more equal and uniform.

Fourth. The space or chamber 2' occupies the whole area of the bottom of the stove, and the heated air that enters it is distributed throughout the whole extent. This renders the bottom of the stove comfortable and warm to the feet in cold weather-a desideratum not found in ordinary stoves; but while the effect of heating the bottom of the stoveis produced, it is not overheated by positive contact with the fire, since there is a thickness of ashes between the fire and the space '5, audit is therefore heated only to a moderate and comfortable degree.

The register G, covering the induction air opening h, is of a peculiar kind. The ordinary circular pivoted register has its holes for the admission of air arranged around its whole circumference and extending to the center,

leaving only room for the pivot. I make these holes 1 l in only the upper half of the register, and their length occupying only about one-half the radius, leaving the lower half, m, of the same entirely closed or un perforated,

' as shown most clearly in Figs. 3 and 4. vThe relative position of this register with the airpipe h is such that its closed or unperforated part m comes opposite the opening of the pipe, while the air holes I l are situated above the same, as shown in Fig. 1. The object of this arrangement is to keep the sparks and coals that snap from the burning wood from passing out into the room, as they would do if the register were made with holes in its Whole circumference, as in the usual way. lhe sparks or coals that pass through the pipe strike against the closed part of the register and fall to the bottom. The arrangement also prevents the passage of ashes through theinduction-pipe to the floor.

I do not claim a downward flue, as I am aware that such is in common use; but

What I claim as my invention, and desire to secure by Letters Patent, is- I 1. The combination and arrangement of opposite fiues e e in a cylindrical body, B, so as to form an oblong fire-chamber, D, within and separated by curved flue-plates G O therefrom, one flue, e, descending from the upper part of said fire-chamber to a fiucspace, 2', in the bottom of the stove, and the other flue, e, ascending from said flue-space to the smokepipe, substantially as and for the purposes herein specified. 2. The construction of the curved flue-plate O, with a bent perforated top, d, and draftpipe, h, all cast in one piece, in combination with the cylinder B, for' the purposes set forth.

3. In combination with the induction-pipe h, the register G, having its air-holes Z I only in the upper half, and in the outer edge of the circle and its closed part m situated opposite the said induction-pipes, substantially as and for the purposes herein set forth.

In witness whereof I have hereunto signed my hand in the presence of two subscribing witnesses.

DAVID L. STILES. Witnesses:

JOHN P. WILooX, GEO. W. PRICKETT. 

